At the point of time when the Industrial Renaissance in Europe added some advanced chapters to the improvement of modern engineering, most astounding developments have been seen in this field. One of them is the liquid-driven and pneumatic driven innovation in the new-age dynamics. This branch of technology has seen various applications even in and servo-controlled drives.
An actuator encourages mechanical developments required for all physical procedures in any framework, especially in changing over one type of energy into another one, for example, in electrical engines where electrical energy is changed into motoring energy. This technique is additionally materialized in different water-driven frameworks which are frequently utilized for driving high-power machine apparatuses and modern robots. They cast a powerful spell in the whole operations. Read more
An actuator is a device that activates a system based on the principle of dynamics. In fact, it is an American term for motor and it has numerous applications in hydraulic, pneumatic, electronic and allied streams of engineering.
Actuators facilitate steady and critical ratio of power and speed for optimum ergonomic solutions for a wide range of industrial and other complex operations of machinery, gadgets etc.
As compared to traditional electrical motors which function due to circular or rotary motion, linear actuators generate the thrust in a straight line. Hence they are extensively used in machinery, automobiles including gigantic earth moving and material handing machines, construction equipment and numerous hospital aids and gadgets. Read more
From the very day when hydraulic power was identified, it has revolutionised almost every sphere of industrial activity. Apart from various applications in the manufacturing sector of engineering, this technology has proved to be a boon in mining, aviation and space science in particular.
Thus the companies which render assorted hydraulic power systems deserve a special mention. In this context, Dantal Hydraulics, having its headquarters at Manesar near Gurgaon in Delhi NCR and one more unit at Bangalore has emerged as a major provider of different products and solutions in hydraulic engineering not only within India but at the global level too.
It has duly earned prestigious certifications for its wide range of products and these are ISO 14001:2004, 3834, 9001:2008 and OHSAS 18001:2007. Read more
The Indian hydraulics engineering industry has been the key player in the country’s rapid economic development, in both the arenas of infrastructure and production. In particular, the segment of earthmoving and construction equipment (ECE) such as hydraulic excavators, wheel loaders, backhoe loaders, motor graders, vibratory compactors, cranes, dumpers, tippers, forklifts trucks, dozers, pavers, batching plants, etc. is based on applications of hydraulics technology. Over the past two decades, the ECE has made enormous progress and grown both in size and diversity.
The driving force in a hydraulic system is the electromechanical actuator, a tiny component that is capable of performing Titanic feats. It is similar to mechanical actuators except that the control knob or handle is replaced with an electric motor. Rotary motion of the motor is converted to linear displacement. Read more
The statement that the science of dynamics based on hydraulics has revolutionised the entire spectrum of engineering needs no second opinion. Similar to a tiny chip in an electronic gadget working wonders, in hydraulics it is the mini power unit which has immense potential of capacity to render numerous functions. In fact it is mind boggling. The applications range from static to mobile and industrial systems. This micro power pack is compatible for AC or DC single and double action utilities.
The Delhi NCR based Dantal Hydraulics which is among leading Indian companies in the design, development and manufacture of hydraulic systems including various components has conceptualised and produced such power units for numerous applications, particularly for garages and vehicles. Some of these are: Read more
As the name suggests, the hydraulic power unit, based on Pascal’s law of dynamics is the main driving component in a hydraulic system. It consists of a motor, a reservoir and a hydraulic pump. Their synchronised action even in a mini hydraulic power unit generates ample power to stir up motion and drive the hydraulic ram. This space saving vertical style device is designed for quiet and leak-free operation.
These power units generate power as per the pressure exerted on a specific area. With a wide range of applications, these are designed depending on the ultimate utility and manufactured. To illustrate this aspect, the Delhi NCR based Dantal Hydraulics is one of the leading Indian companies engaged in the development and fabrication of such silent and leak-free operation power units. Apart from customised applications, the Mini Compact Power Packs produced by this company are extensively used in systems like – Read more
This is a true story of an inquisitive journalist. Watching an off-shore rig of Oil and Natural Gas Commission (ONGC) on the Bombay High during early 1980s from a helicopter or aboard an OSV (off-shore supply vessel) was a delight for him. He would grab every opportunity of visiting Sagar Samrat and another rig as and when the occasion arose for coverage in the magazine for which he was the correspondent in Bombay.
He used to wonder as to how such an expansive platform was hoisted and placed on the mammoth jacked up rigs in the middle of the sea with the anchor winches operating round the clock by turns. And then came the day in late 1982 when a gigantic rig assembled at the Robin Shipyard in Singapore was towed and tugged by several barges to Bombay.
All this while, this journo’s inquisitiveness grew with each passing day and after covering the event of formal induction of this new rig from Singapore, he sought an exclusive visit by an OSV to watch its commissioning that was to take place a fortnight later. Three weeks later, he was thrilled to receive a telephonic call from the PR Manager as well as an invitation from the Director of Engineering to watch the commissioning of the new rig. Read more
Hydraulic technology has ushered the ‘minimum effort, maximum result’ concept in almost every other industrial activity. A ready example is excavation of earth for basement at the construction site of a building. In contrast to the manpower and man-hours spent in executing this task that would have prolonged for over ten days at a stretch, a hydraulically operated excavator does the same job in a single day.
The key element in a hydraulic system is the cylinder, the mechanical actuator, aptly referred as hydraulic motor. There are two versions. Single acting hydraulic cylinders which are simple in design as well as economical and the double acting cylinders. While the single action cylinders function with fluid on only one side of the piston, the latter have a port at each end that are lubricated and supplied with hydraulic fluid for both the retraction and extension action.
By and large, the single action cylinders are found in almost all the steam and petrol or diesel driven IC (internal combustion) engines and also steam turbines, pumps, presses and ramps. The following are the main parts of a cylinder and these are designed and manufactured with utmost precision in which specifications could be as minute as 4 to 16 of a microinch: Read more
Almost the entire range of machinery and thousands of other systems or appliances function on account of linear actuators incorporated in their design. It is the actuator that generates motion and lends momentum to an engineered system. Depending on the application such as whether it should be rotary, pull, push, lift, hoist, drop, telescopic or to and fro, the actuator is designed and manufactured. The power source in it also varies such as manual, electric, air pressure, hydraulic, pneumatic, piezoelectric or ultrasound among others.
In the design, an actuator for standard systems usually has the motor as a separate cylinder attached to its side, either parallel or perpendicular. The motor is attached to the end of the actuator for energising the system. Compact actuators have specially designed motors that try to fit the motor and actuator into the smallest possible shape.
The actuators provide a safe, quiet and clean movement with accurate and regulated motion. They are energy efficient and have a long lifetime with little or no maintenance. Incorporating an actuator is very easy as compared to other energisers such as hydraulic systems. Space wise, it takes least possible space since there is no involvement of pumps or hoses in the system. Apt functioning of a system or a product depends on the actuators adaptability to a wide range of specific of applications. Read more
In modern engineering, hydraulic power has given an impetus to the operation of various applications. Developments in this technology such as the concept of electro hydraulic actuator, EHA in short have further revolutionised the entire operation. Earlier hydraulic systems were energised by pumps which in turn called for tubing and allied parts. It was also observed that in the absence of safety in the design, the functioning of a pump was prone to hazards. Fortunately, the EHA has eclipsed these short comings and also improved the overall performance of hydraulic powered systems.
Primarily, the EHA was designed for applications in aviation particularly in a pilot controlling the aircraft’s speed and ailerons when airborne as well as on the ground. With drastic advancements witnessed in the size, capacity and speed of an aircraft, hydraulic engineers rose to the occasion and developed the electro actuator. In the principle on which EHA functions, motors with enhanced power drive a reversible pump that is linked to the hydraulic cylinder that renders the ultimate action.
This compact integrated system which includes the pump, the cylinder and a reservoir of hydraulic fluid, is packaged into a single self-contained unit. Initially, an EHA was made operational by modulated electrical pulses such as ‘fly-by-the-wire’ systems in aviation which have been replaced by the optics technology. Thus today, it is ‘fly-by-light’ concept. In addition to the lightweight, the EHA is instrumental in saving energy to a great extent. It draws power only when moved and the pressure is regulated internally when the motor stops.